We've got one of these
ACER Aspire 6930G
it's been superb so far, powerful enough for me to work on, play most games. For a laptop it sounds great and it's got a Blu-Ray DVD drive as well so it's great for watching movies.
The only downside is that it eats power - battery life is only about two hours unless you turn everything down
I couldn't see a Blu-ray player on that option...but this one has from the same company:
ACER Aspire 6920G
I never knew they were so cheap......looks like a valuable feature if she likes watching movies